nginx 0.4.14 *) Feature: the "proxy_pass_error_message" directive in IMAP/POP3 proxy. *) Feature: now configure detects system PCRE library on FreeBSD, Linux, and NetBSD. *) Bugfix: ngx_http_perl_module did not work with perl built with the threads support; bug appeared in 0.3.38. *) Bugfix: ngx_http_perl_module did not work if perl was called recursively. *) Bugfix: nginx ignored a host name in an request line. *) Bugfix: a worker process may got caught in an endless loop, if a FastCGI server sent too many data to the stderr. *) Bugfix: the $upstream_response_time variable may be negative if the system time was changed backward. *) Bugfix: the "Auth-Login-Attempt" parameter was not sent to IMAP/POP3 proxy authentication server when POP3 was used. *) Bugfix: a segmentation fault might occur if connect to IMAP/POP3 proxy authentication server failed.

new file mode 100644
--- /dev/null
+++ b/src/core/ngx_slab.h
@@ -0,0 +1,45 @@
+
+/*
+ * Copyright (C) Igor Sysoev
+ */
+
+
+#ifndef _NGX_SLAB_H_INCLUDED_
+#define _NGX_SLAB_H_INCLUDED_
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+
+
+typedef struct ngx_slab_page_s  ngx_slab_page_t;
+
+struct ngx_slab_page_s {
+    uintptr_t         slab;
+    ngx_slab_page_t  *next;
+    uintptr_t         prev;
+};
+
+
+typedef struct {
+    ngx_atomic_t      lock;
+
+    size_t            min_size;
+    size_t            min_shift;
+
+    ngx_slab_page_t  *pages;
+    ngx_slab_page_t   free;
+
+    u_char           *start;
+    u_char           *end;
+
+    ngx_shmtx_t       mutex;
+} ngx_slab_pool_t;
+
+
+void ngx_slab_init(ngx_slab_pool_t *pool);
+void *ngx_slab_alloc(ngx_slab_pool_t *pool, size_t size);
+void ngx_slab_free(ngx_slab_pool_t *pool, void *p);
+
+
+#endif /* _NGX_SLAB_H_INCLUDED_ */